CereProc vs Chatterbox TTS
CereProc
app.cereproc.com
Chatterbox TTS
github.comSide by side
| Figure | CereProc | Chatterbox TTS |
|---|---|---|
| Price from | £12.99/mo | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | Yes |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 2 |
| Spec score · Text-to-Speech Software | 8.6 (#36) | 9.0 (#9) |
| Spec score · Text-to-speech tools | 8.6 (#45) | 8.9 (#21) |
| Spec score · AI voice generators | 8.6 (#9) | 9.0 (#2) |
| Spec score · AI voice cloning tools | 8.6 (#13) | 9.0 (#4) |
| Spec score · Voice Cloning Software | 8.7 (#8) | 9.1 (#1) |
| Commercial use | Yes | Yes |
| Founded | 2005 | 2019 |
| Free plan | No | Yes |
| Platforms | web,windows,macos,linux,ios,android,api | linux,macos,self_hosted |
| Product | CereProc provides text-to-speech technology for personal use, business applications, and assistive devices. | Chatterbox is a family of open-source text-to-speech models by Resemble AI. |
| Support | The maker provides an FAQ, contact page, SDK documentation and sample code, and says SDK users can access dedicated developer support. | The README invites users to join the project’s Discord community. |
| Voice cloning | Yes | Models can generate speech conditioned on a short reference audio clip. |
Plans
CereProc
- CereVoice Cloud 1 Million Credit£12.99 a month
- CereVoice Cloud creditsPriced on request
- CereVoice SDK developer licensePrice not published
Chatterbox TTS
- Chatterbox open-source modelsFree
- Voice AI Research (Chatterbox)Free
In their own words
CereProc
CereProc provides text-to-speech technology for personal use, business applications, and assistive devices. Its voice library includes multilingual and accented voices with emotional synthesis. CereWave AI uses deep neural networks to generate speech and offers controls for language, gender, accent, and age. CereVoice Cloud converts text through a web interface or API using purchased credits; users can play, save, and download audio. The maker lists customer service, education, content creation, and assistive technology as Cloud applications. SDKs support Windows, macOS, Linux, Android, and iOS, with online and offline operation. The cServer supports MRCP v1/v2, Microsoft SAPI 5, and C, C++, and Python clients, and is listed for Windows and RPM-based Linux distributions. CerePlay is available for Android, iOS, iPadOS, and Apple M-series Macs. CereVoice Cloud's listed plan costs £12.99 a month for 1,000,000 characters. There is no free plan. Commercial SDK users are directed to sales, and Windows SAPI5 and macOS voices are being deprecated.
Chatterbox TTS
Chatterbox TTS is a family of open-source text-to-speech models from Resemble AI. Its listed choices include Turbo, Nano, Multilingual V3, and dedicated single-language models. Turbo supports tags that can prompt reactions such as sighs, gasps, coughs, and laughter; Nano is intended for on-device or CPU use when memory and latency budgets are tight. The README lists 23 languages for Multilingual. The project supports voice cloning, audio input, batch processing, voice isolation, and WAV export. Generated audio carries Resemble AI’s PerTh watermark. The repository is MIT licensed, and its listed plan costs nothing for research and development. Resemble says it has stopped offering voice generation as a commercial product, while its models remain open and free for research and development. The README provides pip and source installation instructions and describes Python 3.11 on Debian 11, with CUDA, CPU, and MPS device options. Listed platforms are Linux, macOS, and self-hosted.